2 "ansible_command": "ansible-playbook",
3 "ansible_vars_file": "host_config.yml",
4 "arvados_cluster": "zzzzz",
9 "aws_source_ami": "ami-0a9d5908c7201e91d",
10 "aws_volume_gb": "20",
11 "aws_associate_public_ip_address": "true",
12 "aws_ena_support": "true",